[NSRCA-discussion] Speaking of 2.4GHz

Fri Feb 29 13:46:18 AKST 2008

I came so close to buying an XPS system and read everything on all the forums I could find. The theory is good and if it actually channel hopped it would be great because the 2.4 GHz band is really dirty. If you have access to a spectrum analyzer that can tune that high you will see that if there are any houses around there is noise for you to contend with. If you want to find a lot of info on XPS go search RCGroups. There is a lot of info to be had but there is also a lot of misinformation. If you do a little research on the technology you will see what is fact and what is not.

The way the spread spectrum stuff is supposed to work should be like a lock and a key (some of the stuff used in other industries can still talk with a pretty high noise floor). That being said, XPS is looking at coming out with a 900mHz system and that band, at least where I fly and live, is a little cleaner. Until I actually see a system that works as I want it to I think I'll stay on 72mHz. I don't use PCM because I prefer the ability to fly through interference instead of having a lock out and with everyone looking to 2.4gig I should have no problem getting the pin at my field.

  ----- Original Message ----- 
  From: Ed White 
  To: NSRCA Mailing List 
  Sent: Friday, February 29, 2008 5:17 PM
  Subject: Re: [NSRCA-discussion] Speaking of 2.4GHz

  Ed,

  I've been digging into (ie, poking around RCU) for XPS issues and as is usually the case find mostly secondhand and anecdotal problems along with a few really unhappy people.  I also find a lot of happy XPS users.  I am attracted to the XPS because it offers the future possibility of telemetry, something I would like to play with.  Lastly on the Spektrum, I've seen only a handful of systems fly at our local field.  I've also seen two crashes on two different Spektrum systems due to total loss of control, at close range.  At least one of those verified good battery voltage under load after the crash (the other one didn't check).  

  I know there are a huge number of satisfied Spektrum users.  I know of two locally who are not quite so satisfied.  Neither ever did figure out the reason for the loss of control.  And with Futaba's recent problem (which they have fixed), well I think we all have to realize there is no bulletproof system.  Just looking to see if people have had problems with the XPS.

  Ed

  Ed Alt <ed_alt at hotmail.com> wrote:
    With a proven solution from Spektrum / JR and with Futaba introducing what will undoubtedly be a solid solution, why play with XPS?  I can't think of any advantage that it offers and it apparently has some issues to dig into and understand.  

    Ed

--------------------------------------------------------------------------
      Date: Fri, 29 Feb 2008 08:44:14 -0800
      From: edvwhite at sbcglobal.net
      To: nsrca-discussion at lists.nsrca.org
      Subject: [NSRCA-discussion] Speaking of 2.4GHz

      Anybody have experience with the xtremelink systems?

      http://www.xtremepowersystems.net/

      Ed

      Ken Thompson <kthompson at stx.rr.com> wrote: 
        That's pretty cool, thanks for bringing this to the list.  I saw this in the Flying Giants first thing this morning.
          ----- Original Message ----- 
          From: Kevin Brice 
          To: nsrca-discussion at lists.nsrca.org 
          Sent: Thursday, February 28, 2008 11:25 AM
          Subject: [NSRCA-discussion] The Great 2.4GHz DSM Giveaway

          For those on the 2.4 fence, this may encourage you to upgrade to DSM.

          I am not sure if the html graphics will show so here is the link to Spektrum's Receiver Giveaway. 
          http://www.spektrumrc.com/giveaway/ 

          Kevin Brice
          kevinbrice at earthlink.net 

----------------------------------------------------------------------

          From: Spektrum Signal [mailto:webmaster at spektrumrc.com] 
          Sent: Thursday, February 28, 2008 10:00 AM
          To: kevin at wenzlerarchitects.com
          Subject: The Great 2.4GHz DSM Giveaway

          Having trouble viewing this email? Click here.

                      February 28, 2008 

                                PLEASE VISIT WWW.SPEKTRUMRC.COM/GIVEAWAY FOR MORE INFORMATION 
                                Copyright © 2008 Horizon Hobby. All rights reserved.
                                If you no longer wish to receive this newsletter, you may unsubscribe
                                Please send any questions, comments, or concerns to webmaster at spektrumrc.com
                                Mailing Address: Horizon Hobby, Inc., 4105 Fieldstone Rd., Champaign, IL 61822
                                Spektrum is used with permission from Bachmann Industries, Inc. 

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